So last night, after having humidifier working for whole day I could touch the light switch without spark but thermostat got me ;)
I was checking bigger humidifier and those holding 5-8 gallons take lot of room and look ugly.
So I order furnace humidifier and will see how this will work.
Don't expect too much as I plan to put it on living room furnace, while master has separate HVAC who is in the attic and hard to access. Our furnaces work 1-2 hr a day only.
In the mean time I have 2 of 1-gal humidifiers.
Carpet in master will go and I already have those tiles, that look like hardwood for the project, but I am not looking forward into replacing good carpet on spiral stairway.
Thanks for all the help.